2014 stainless steel mirror tube types

Stainless steel mirror tube types

　　 There are many types of stainless steel pipes, different materials, different uses, different technical requirements, and some thicknesses are also different. In order to distinguish stainless steel pipes, they are classified according to the following categories in the same city.

ways to produce

　　 Stainless steel pipes can be divided into stainless steel seamless pipes and welded pipes according to different production methods. Seamless pipes can be simply divided into hot-rolled pipes, cold-rolled pipes, cold-drawn pipes and extruded pipes. Cold drawn and hot drawn are secondary processing of steel pipes. Welded pipes can be divided into straight seam welded pipes and spiral welded pipes.

　　 section shape

　　 Stainless steel pipes can be divided into round pipes and heterogeneous pipes according to the cross-sectional shape. Special-shaped pipes include rectangular, rhombic, elliptical, hexagonal, octagonal, and various cross-sectional asymmetrical pipes. The opposite sex tube is widely used in various structural parts, tools and mechanical parts. Compared with round pipes, special-shaped pipes generally have larger moments of inertia and section modulus, and have greater resistance to bending and torsion, which can greatly reduce structural weight and save steel.

　　 material

Stainless steel pipes are divided into ordinary carbon steel pipes, high-quality carbon structural steel pipes, alloy structural pipes, alloy steel pipes, bearing steel pipes, stainless steel pipes, and bimetal composite pipes, plating and coating pipes to save precious metals and meet special requirements. .

　　Pipe end shape

　　Stainless steel pipes can be divided into smooth pipes and threaded pipes (threaded steel pipes) according to the state of the pipe ends. The threaded pipe can be divided into ordinary threaded pipe (pipes for conveying water, gas and other low pressure, which are connected by ordinary cylindrical or tapered pipes) and special threaded pipes (pipes for petroleum and geological drilling. For important threaded pipes, use Special thread connection). For some special pipes, in order to compensate for the influence of the thread on the strength of the pipe end, the pipe end is usually thickened (internal thickening, external thickening or internal and external thickening) before turning the wire.

　　 use

According to the purpose, it can be divided into oil well pipes (casing, tubing and drill pipes, etc.), line pipes, boiler pipes, mechanical structure pipes, hydraulic prop pipes, gas cylinder pipes, geological pipes, chemical pipes (high pressure fertilizer pipes, petroleum cracking pipes, etc.) ) And ship pipes.